Gates 23864 HVAC Defrost and Heater Air Duct Hose

Gates 23864 Defroster Air Intake Hose

The Gates 23864 defroster/air intake hose is built for low-pressure, low-suction HVAC and under-hood routing where a formed duct hose is needed. With a 4 in. inside diameter and 6 ft. centerline length, it supports defroster, air duct, and air intake service on select vehicles, including 1975 Buick Century, LeSabre, Regal, and Riviera.

Key Features

• Brand: Gates Defroster/Air Intake Hose line
• Part number: 23864
• 4 in. inside diameter (102 mm)
• 6 ft. centerline length (72 in. / 1.83 m / 1829 mm)
• For defrosters, air ducts, air intakes, under-hood routing, and other low-pressure, low-suction applications
• Approved for marine applications
• Compatible with 1975 Buick Century, LeSabre, Regal, and Riviera

Detailed Description

Gates 23864 is part of the Defroster/Air Intake Hose product line, which focuses on ducting for HVAC and intake paths that do not require high-pressure hose construction. The 4-inch diameter and 6-foot centerline length make it a practical choice for routing air through defroster systems and related duct applications where a flexible hose is needed. This part number, 23864, is also referenced in interchange listings for related aftermarket and OE-style applications.

For fitment-based searches, this hose is listed for 1975 Buick Century, 1975 Buick LeSabre, 1975 Buick Regal, and 1975 Buick Riviera. If you are sourcing a Gates 23864 defroster hose for a classic Buick HVAC repair, this part matches the documented application data.

This part cross-references TYC 96007 and Wix 33761 for the same application.

Common Uses

• Restoring defroster airflow in a vehicle HVAC system
• Replacing a cracked or deteriorated air intake duct hose
• Repairing low-suction under-hood air routing
• Addressing restricted airflow caused by collapsed ducting
• Servicing marine or vehicle air transfer applications that use flexible hose

Installation Notes

Verify the required inside diameter and centerline length before installation. Measure the routing path, confirm clearance around bends, and inspect adjoining duct connections for wear or deformation. Because this hose is used in low-pressure and low-suction service, proper fit and secure attachment are important for maintaining airflow performance.

Quality Assurance

Gates manufactures this hose for defroster, air duct, air intake, and other low-pressure applications, with marine application approval noted by the manufacturer. Use the documented dimensions and vehicle fitment data to confirm application before ordering.